A method and system for verifying trackside conditions in safety critical railroad applications by reporting the status of trackside signals and switches to a remote train control system. The system comprises at least one sensor for providing trackside conditions electrically connected to a circuit for providing trackside conditions to a railroad, said sensor being powered by voltage applied to the circuit such that the sensor is energized only when said electrical component is engaged. The system and method further comprises a method and system which is failsafe and which enables the control system to independently verify signals from each sensor.
Railroad Signaling and Communication System Using a Fail-Safe Voltage Sensor to Verify Trackside Conditions in Safety-Critical Railroad Applications
2015-07-09
Patent
Elektronische Ressource
Englisch
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